19 December 2021 Competition and extinction Level Objective

19 December 2021 Competition and extinction Level Objective Outcome 4 Investigate how an animal becomes extinct and the possible effects of extinction Explain what plants and animals compete for 5/6 6/7 Explain why an animal becomes extinct Analyse the effects of a species on a food web Tricky: What are the lions competing for? Keywords Competition Species Extinction Trickier Suggest why some animals risk their lives to compete to reproduce?

To Do Now Tricky Which animal… Has teeth adapted to tearing flesh. Competition: Uses it tail for a courtship display. plants have to Animals and compete for limited resources. The best Has spines to animals or plants protect itselfadapted from predators. will win and survive. Lives in a social group. Trickier Can you deduce the reasons an animal competes?

What do Animals Need to Survive? Food r e t a W Shelter Mate

Interspecific Competition Between individuals of different species. The animals compete for the same resource in an ecosystem (e. g. food or living space). E. g. The Red and Grey Squirrel What adaptations have made the grey squirrel more successful in Britain?

Intraspecific Competition Between members of the same species. The compete for the same resource in an ecosystem (e. g. food, light, nutrients, space, mates). ( If these were the only 2 male lions living in an area what features would the next generation of lions be likely to have? Why is this advantageous for the species?

MID-LESSON PROGRESS CHECK Tricky Describe 2 types of competition between animals Trickier Explain why interspecific competition doesn’t include competition for mates? Level Objective Outcome 4 Investigate how an animal becomes extinct and the possible effects of extinction Explain what plants and animals compete for 5/6 6/7 Explain why an animal becomes extinct Analyse the effects of a species on a food web

What do all these animals have in common ? T C N I T X E Changes in a habitat can lead to increased in competition where only the strongest survive. Lack of food , water , shelter or mate can lead to the extinction of an entire species

Effects of species extinction Then extinction of one species can often greatly affect a whole food web Tricky: What could cause a species of squirrel to become extinct. Trickier Describe what could happen to the hawks and mice if squirrels were extinct.

Task to do Now Pick a species of animal (human if you like) Draw and annotate a picture showing all the adaptations that help you compete with other organisms and overcome extinction. Consider the following : How you are adapted to your habitat ? Give examples of competition is present in your habitat. How will you overcome competition to survive extinction ?

Task to do now 1. Swap your organism with another member of the class. 2. Peruse through their diagram thoroughly. 3. You are now licensed to kill and wipe out the population ! Unlike 007 your cannot use a gun ! your only weapon is competition. Think of all the possible ways you could cause extinction to the population through competition. Get creative – remember you can add or remove things to the population and habitat !!!!

Plenary: what have you learnt today Level Objective Outcome 4 Investigate how an animal becomes extinct and the possible effects of extinction Explain what plants and animals compete for 5/6 6/7 Explain why an animal becomes extinct Analyse the effects of a species on a food web How do you think we can conserve endangered animals ? ?